Does SAFARI freeze up after you watch a video online?

I was watching a video online for like 40 mins and after i X out of that screen and go to another safari window, or if i try to type a new link, when i press Enter, it starts loading for a long time and i end up Force Quitting because it doesnt end up load. Does this happen to anyone else? It always happens after i watch a video only...i end up force quitting

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